Optical module optical power debugging method based on calculation

Abstract

The invention provides an optical module optical power debugging method based on calculation. The optical module optical power debugging method comprises the following steps: S10, setting two-point offset DAC initial values during open loop; S20, firstly using open-loop debugging for the optical power, writing the two bias DAC initial values in the S10 into a register of an optical module, and obtaining the optical power values of the two corresponding points and the two corresponding bias current values separately; S30, fitting the optical power values of the two points in the step S20 and the two bias current values into a straight line; S40, substituting the optical power target value into the linear equation to obtain a required bias current value Bias Current; S50, obtaining a bias DAC value BIAS _ DAC corresponding to the optical power target value; S60, writing the BIAS _ DAC into a register of the optical module, and reading a power monitoring value MPD _ ADC of output opticalpower; and S70, obtaining a bias DAC value APC _ DAC required by the optical power target value during closed loop. According to the invention, the efficiency of optical power debugging can be improved.

Description

technical field [0001] The invention belongs to the technical field of optical communication, in particular to a calculation-based optical module optical power debugging method. Background technique [0002] In recent years, optical communication systems have developed rapidly in terms of transmission rate, transmission capacity, transmission distance, and cost. As a result, more stringent requirements have been placed on the production process of optical modules. On the premise of ensuring quality, the cost of optical modules should be reduced as much as possible. Production time. At present, when debugging the optical power of optical modules, the method usually used is the dichotomy method, also known as the half method, which is a search algorithm for finding specific elements in an ordered array. Due to differences in batches of optical components, the initialization value of optical power debugging is unreasonable, resulting in long debugging time, or exceeding the cur...

AI Technical Summary

Problems solved by technology

Due to differences in batches of optical components, the initialization value of optical power debugging is unreasonable, resulting in long debugging time, or exceeding the current tolerance range of the optical module transmitting circuit, causing the optical module to trigger the shutdown protection function, resulting in no light phenomenon, which seriously affects production efficiency

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